# Author: lee

# print(names[1])
users_list = ["lee,yang,xin,sun"]
password = [123456,654321,23456,65432]
age_list = [19,20,19,19]
# liebiaode qiantao
info_list = [['lee,123456,19'],['yang,654321,20'],['xin,23456,19'],['sun,65432,19']]

print(users_list[0])
print(password[0])
print[age_list[0]]
print(info_list[0])


# -3,-2,-1,0,1,2,3
names = ["lee","yang","xin","sun"]
print(names[1:3])
# zhengxiangquzhi
print(names[:2])

# fanxiangquzhi
print(names[-1:1])